tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_removal_ondecode.html (4422B)

      1 <!DOCTYPE HTML>
      2 <html>
      3 <!--
      4 https://bugzilla.mozilla.org/show_bug.cgi?id=841579
      5 -->
      6 <head>
      7  <title>Test for Bug 841579</title>
      8  <script src="/tests/SimpleTest/SimpleTest.js"></script>
      9  <script src="/tests/SimpleTest/WindowSnapshot.js"></script>
     10  <script type="application/javascript" src="imgutils.js"></script>
     11  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
     12 </head>
     13 <body>
     14 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=841579">Mozilla Bug 841579</a>
     15 <p id="display"></p>
     16 <div id="content">
     17 </div>
     18 <pre id="test">
     19 <script type="application/javascript">
     20 /** Test for Bug 841579*/
     21 
     22 SimpleTest.requestFlakyTimeout("Early failure timeout");
     23 SimpleTest.waitForExplicitFinish();
     24 
     25 const FAILURE_TIMEOUT = 120000; // Fail early after 120 seconds (2 minutes)
     26 
     27 const Cc = SpecialPowers.Cc;
     28 const Ci = SpecialPowers.Ci;
     29 const gContent = document.getElementById("content");
     30 
     31 var gImg;
     32 var gMyDecoderObserver;
     33 var gIsTestFinished = false;
     34 var gFiles;
     35 var gNotifications = 0;
     36 var gLoads = 0;
     37 var gRemovals = 0;
     38 var gExpected = 5;
     39 
     40 function* fileToLoad() {
     41  yield "red.png";
     42  yield "invalid.jpg";
     43  yield "lime100x100.svg";
     44  yield "bad.jpg";
     45  yield "rillybad.jpg";
     46 }
     47 
     48 function onSizeAvailable() {
     49  ok(true, "AfterLoad.onSizeAvailable called for " + gImg.src);
     50 }
     51 function onLoadComplete(aRequest) {
     52  ok(gExpected > gLoads, "AfterLoad.onLoadComplete called for " + gImg.src);
     53  gLoads++;
     54 
     55  // We aren't going to get a decode complete event if the metadata decoding
     56  // failed (i.e. for invalid.jpg). By definition we should have the size or
     57  // an error once we get a load complete event, so check if the size is valid
     58  // and if not, trigger a decode complete event manually.
     59  var hasSize = false;
     60  try {
     61    hasSize = aRequest.image.width > 0 && aRequest.image.height > 0;
     62  } catch(e) {}
     63 
     64  if (hasSize) {
     65    maybeAdvance();
     66  } else {
     67    onDecodeComplete(aRequest);
     68  }
     69 }
     70 
     71 function onDecodeComplete() {
     72  ok(gExpected > gRemovals, "AfterLoad.onDecodeComplete called for " + gImg.src);
     73  SimpleTest.executeSoon(function() {
     74    try {
     75      gContent.removeChild(gImg);
     76    } 
     77    catch (e) {} 
     78    gRemovals++;
     79    maybeAdvance();
     80  });
     81 }
     82 
     83 function failTest() {
     84  ok(false, "timing out after " + FAILURE_TIMEOUT + "ms.  " +
     85            "currently displaying " + gImg.src);
     86  cleanUpAndFinish();
     87 }
     88 
     89 function onNotification()
     90 {
     91  ok(gExpected > gNotifications, "AfterLoad.onNotification called for " + gImg.src);
     92  gNotifications++;
     93  maybeAdvance();
     94 }
     95 
     96 function maybeAdvance()
     97 {
     98  if (gNotifications != gLoads || gNotifications != gRemovals) {
     99    return;
    100  }
    101 
    102  let {done, value} = gFiles.next();
    103  if (done) {
    104    cleanUpAndFinish();
    105    return;
    106  }
    107  gImg.src = value;
    108  gContent.appendChild(gImg);
    109 }
    110 
    111 function cleanUpAndFinish() {
    112  // On the off chance that failTest and myOnStopFrame are triggered
    113  // back-to-back, use a flag to prevent multiple calls to SimpleTest.finish.
    114  if (gIsTestFinished) {
    115    return;
    116  }
    117  let imgLoadingContent = SpecialPowers.wrap(gImg);
    118  imgLoadingContent.removeObserver(gMyDecoderObserver);
    119  // TODO - this isn't the case until post-bug 716140's refactorings
    120  // ok(gNotifications == gLoads, "Should be notified the same number of times as loads");
    121  SimpleTest.finish();
    122  gIsTestFinished = true;
    123 }
    124 
    125 function main() {
    126  gFiles = fileToLoad();
    127  gImg = new Image();
    128  gImg.onload = onNotification;
    129  gImg.onerror = onNotification;
    130 
    131  // Create, customize & attach decoder observer
    132  var observer = new ImageDecoderObserverStub();
    133  observer.sizeAvailable = onSizeAvailable;
    134  observer.loadComplete = onLoadComplete;
    135  observer.decodeComplete = onDecodeComplete;
    136  gMyDecoderObserver =
    137    Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools)
    138      .createScriptedObserver(SpecialPowers.wrapCallbackObject(observer));
    139  let imgLoadingContent = SpecialPowers.wrap(gImg);
    140  imgLoadingContent.addObserver(gMyDecoderObserver);
    141 
    142  // We want to test the cold loading behavior, so clear cache in case an
    143  // earlier test got our image in there already.
    144  clearAllImageCaches();
    145 
    146  // kick off image-loading! myOnStopFrame handles the rest.
    147  gImg.setAttribute("src", gFiles.next().value);
    148  gContent.appendChild(gImg);
    149 
    150  // In case something goes wrong, fail earlier than mochitest timeout,
    151  // and with more information.
    152  setTimeout(failTest, FAILURE_TIMEOUT);
    153 }
    154 
    155 window.onload = main;
    156 
    157 </script>
    158 </pre>
    159 </body>
    160 </html>